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There often seems to be some confusion amongst newbies about what a "CoolMist" humidifier is & how it works.

It is a simple inexpensive IMPELLER driven device that picks up water from the container the small quite electric motor sits in, then by use of centrifugal force & very small fan type vanes inside it, mixes very fine droplets of internal water into a flow of air - from an intake on top it, which exhausts out of an outlet.

The result is a flow of moisture laden fresh air. Which is IDEAL for bulk substrate tray fruiting chamber, as it creates a high RH & provides fresh air exchange. Which is a key factor in optimal bulk fruit cultivation.

i've been thinking about adding a ultrasonic humidifier to my pmp which will have some cakes and blk casings. would a cool mist be a better choice? im finding better results from my pmp when i fan and mist and i was hoping to make it better so i won't have to do that anymore. (if i dont fan or mist its still fairly ok but i see such better results when i do)

That one burnt up on me. I filled the water reservoir too high. now I'm back to using the older model, which I think the older model holds a few days more water. Also seems to be pushing out more air then the V4100 was.

Would this be advised for a h.poo spawned casing in a TiT? Or will it create enough humidity on its own....

--------------------Jump ahead 10, maybe 20 years, and you're married, only your marriage doesn't have that same energy that it used to. You start to think back on all the girls you ever met, and what might have happened if you picked up with one of them.